From 9f13e888ef77d36a97a3ace278e8e812a98e740d Mon Sep 17 00:00:00 2001 From: Lance Richardson Date: Thu, 18 Feb 2021 13:19:20 -0500 Subject: [PATCH] net/bnxt: fix Rx queue count bnxt_rx_queue_count_op() incorrectly returns the number of filled but unprocessed completion queue entries instead of the number of filled but unprocessed received packet completions. Fix by properly accounting for the number of completion ring entries used by the various received packet completion types. Fixes: 34c0ba839bae ("net/bnxt: fix Rx queue count") Cc: stable@dpdk.org Signed-off-by: Lance Richardson Reviewed-by: Somnath Kotur Reviewed-by: Ajit Khaparde --- drivers/net/bnxt/bnxt_cpr.h | 4 ++++ drivers/net/bnxt/bnxt_ethdev.c | 38 +++++++++++++++++++++++++++++----- drivers/net/bnxt/bnxt_rxr.c | 3 +-- drivers/net/bnxt/bnxt_rxr.h | 4 ++++ 4 files changed, 42 insertions(+), 7 deletions(-) diff --git a/drivers/net/bnxt/bnxt_cpr.h b/drivers/net/bnxt/bnxt_cpr.h index d7e0d4621a..28c0a9049c 100644 --- a/drivers/net/bnxt/bnxt_cpr.h +++ b/drivers/net/bnxt/bnxt_cpr.h @@ -26,6 +26,10 @@ struct bnxt_db_info; #define CMP_TYPE(cmp) \ (((struct cmpl_base *)cmp)->type & CMPL_BASE_TYPE_MASK) +/* Get completion length from completion type, in 16-byte units. */ +#define CMP_LEN(cmp_type) (((cmp_type) & 1) + 1) + + #define ADV_RAW_CMP(idx, n) ((idx) + (n)) #define NEXT_RAW_CMP(idx) ADV_RAW_CMP(idx, 1) #define RING_CMP(ring, idx) ((idx) & (ring)->ring_mask) diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c index 22c880c5c3..9824cdb6d8 100644 --- a/drivers/net/bnxt/bnxt_ethdev.c +++ b/drivers/net/bnxt/bnxt_ethdev.c @@ -2942,8 +2942,8 @@ static uint32_t bnxt_rx_queue_count_op(struct rte_eth_dev *dev, uint16_t rx_queue_id) { struct bnxt *bp = (struct bnxt *)dev->data->dev_private; - uint32_t desc = 0, raw_cons = 0, cons; struct bnxt_cp_ring_info *cpr; + uint32_t desc = 0, raw_cons; struct bnxt_rx_queue *rxq; struct rx_pkt_cmpl *rxcmp; int rc; @@ -2957,15 +2957,43 @@ bnxt_rx_queue_count_op(struct rte_eth_dev *dev, uint16_t rx_queue_id) raw_cons = cpr->cp_raw_cons; while (1) { + uint32_t agg_cnt, cons, cmpl_type; + cons = RING_CMP(cpr->cp_ring_struct, raw_cons); - rte_prefetch0(&cpr->cp_desc_ring[cons]); rxcmp = (struct rx_pkt_cmpl *)&cpr->cp_desc_ring[cons]; - if (!CMP_VALID(rxcmp, raw_cons, cpr->cp_ring_struct)) { + if (!CMP_VALID(rxcmp, raw_cons, cpr->cp_ring_struct)) break; - } else { - raw_cons++; + + cmpl_type = CMP_TYPE(rxcmp); + + switch (cmpl_type) { + case CMPL_BASE_TYPE_RX_L2: + case CMPL_BASE_TYPE_RX_L2_V2: + agg_cnt = BNXT_RX_L2_AGG_BUFS(rxcmp); + raw_cons = raw_cons + CMP_LEN(cmpl_type) + agg_cnt; + desc++; + break; + + case CMPL_BASE_TYPE_RX_TPA_END: + if (BNXT_CHIP_P5(rxq->bp)) { + struct rx_tpa_v2_end_cmpl_hi *p5_tpa_end; + + p5_tpa_end = (void *)rxcmp; + agg_cnt = BNXT_TPA_END_AGG_BUFS_TH(p5_tpa_end); + } else { + struct rx_tpa_end_cmpl *tpa_end; + + tpa_end = (void *)rxcmp; + agg_cnt = BNXT_TPA_END_AGG_BUFS(tpa_end); + } + + raw_cons = raw_cons + CMP_LEN(cmpl_type) + agg_cnt; desc++; + break; + + default: + raw_cons += CMP_LEN(cmpl_type); } } diff --git a/drivers/net/bnxt/bnxt_rxr.c b/drivers/net/bnxt/bnxt_rxr.c index 91a00c7cf4..498811a732 100644 --- a/drivers/net/bnxt/bnxt_rxr.c +++ b/drivers/net/bnxt/bnxt_rxr.c @@ -827,8 +827,7 @@ static int bnxt_rx_pkt(struct rte_mbuf **rx_pkt, goto next_rx; } - agg_buf = (rxcmp->agg_bufs_v1 & RX_PKT_CMPL_AGG_BUFS_MASK) - >> RX_PKT_CMPL_AGG_BUFS_SFT; + agg_buf = BNXT_RX_L2_AGG_BUFS(rxcmp); if (agg_buf && !bnxt_agg_bufs_valid(cpr, agg_buf, tmp_raw_cons)) return -EBUSY; diff --git a/drivers/net/bnxt/bnxt_rxr.h b/drivers/net/bnxt/bnxt_rxr.h index 0e31b37cad..06d10848da 100644 --- a/drivers/net/bnxt/bnxt_rxr.h +++ b/drivers/net/bnxt/bnxt_rxr.h @@ -37,6 +37,10 @@ static inline uint16_t bnxt_tpa_start_agg_id(struct bnxt *bp, #define BNXT_TPA_END_AGG_ID_TH(cmp) \ rte_le_to_cpu_16((cmp)->agg_id) +#define BNXT_RX_L2_AGG_BUFS(cmp) \ + (((cmp)->agg_bufs_v1 & RX_PKT_CMPL_AGG_BUFS_MASK) >> \ + RX_PKT_CMPL_AGG_BUFS_SFT) + #define BNXT_RX_POST_THRESH 32 /* Number of descriptors to process per inner loop in vector mode. */ -- 2.20.1